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<p class="level0"><a name="NAME"></a><h2 class="nroffsh">NAME</h2>
<p class="level0">CURLOPT_USERNAME - user name to use in authentication <a name="SYNOPSIS"></a><h2 class="nroffsh">SYNOPSIS</h2>
<p class="level0"><pre class="level0">
&#35;include &lt;curl/curl.h&gt;
&nbsp;
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_USERNAME,
&nbsp;                         char *username);
</pre>
<a name="DESCRIPTION"></a><h2 class="nroffsh">DESCRIPTION</h2>
<p class="level0">Pass a char * as parameter, which should be pointing to the zero terminated user name to use for the transfer. 
<p class="level0"><a Class="bold" href="./CURLOPT_USERNAME.html">CURLOPT_USERNAME</a> sets the user name to be used in protocol authentication. You should not use this option together with the (older) <a Class="emphasis" href="./CURLOPT_USERPWD.html">CURLOPT_USERPWD</a> option. 
<p class="level0">When using Kerberos V5 authentication with a Windows based server, you should include the domain name in order for the server to successfully obtain a Kerberos Ticket. If you don't then the initial part of the authentication handshake may fail. 
<p class="level0">When using NTLM, the user name can be specified simply as the user name without the domain name should the server be part of a single domain and forest. 
<p class="level0">To include the domain name use either Down-Level Logon Name or UPN (User Principal Name) formats. For example, EXAMPLE\user and user@example.com respectively. 
<p class="level0">Some HTTP servers (on Windows) support inclusion of the domain for Basic authentication as well. 
<p class="level0">To specify the password and login options, along with the user name, use the <a Class="emphasis" href="./CURLOPT_PASSWORD.html">CURLOPT_PASSWORD</a> and <a Class="emphasis" href="./CURLOPT_LOGIN_OPTIONS.html">CURLOPT_LOGIN_OPTIONS</a> options. <a name="DEFAULT"></a><h2 class="nroffsh">DEFAULT</h2>
<p class="level0">blank <a name="PROTOCOLS"></a><h2 class="nroffsh">PROTOCOLS</h2>
<p class="level0">Most <a name="EXAMPLE"></a><h2 class="nroffsh">EXAMPLE</h2>
<p class="level0">TODO <a name="AVAILABILITY"></a><h2 class="nroffsh">AVAILABILITY</h2>
<p class="level0">Added in 7.19.1 <a name="RETURN"></a><h2 class="nroffsh">RETURN VALUE</h2>
<p class="level0">Returns CURLE_OK if the option is supported, CURLE_UNKNOWN_OPTION if not, or CURLE_OUT_OF_MEMORY if there was insufficient heap space. <a name="SEE"></a><h2 class="nroffsh">SEE ALSO</h2>
<p class="level0"><a Class="manpage" href="./CURLOPT_USERPWD.html">CURLOPT_USERPWD</a>, <a Class="manpage" href="./CURLOPT_PASSWORD.html">CURLOPT_PASSWORD</a>, <a Class="manpage" href="./CURLOPT_HTTPAUTH.html">CURLOPT_HTTPAUTH</a>, <a Class="manpage" href="./CURLOPT_PROXYAUTH.html">CURLOPT_PROXYAUTH</a><p class="roffit">
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